John Conklin, MD
Diagnostic Radiology · Boston, MANPI 1861917114
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $1,625 of the $2,442 with a category attached, or 66.5%. Siemens Medical Solutions USA, Inc. accounts for 96.4% of it on its own, with 1 other manufacturer making up the rest. Reporting peaked in 2023 at $1,625 and has fallen 94.6% since, to $88 in 2025.
Across 5 payments — averaging $488.38 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Siemens Medical Solutions USA, Inc.$2K
- Celltrion, Inc.$88
Across 24 payments — averaging $10,953 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- GSK$136K
- F. Hoffmann-la Roche AG$125K
- Hoffmann-la Roche Limited$2K
What the payments were for
- Consulting fees$1,62567%
- Speaking & faculty fees$73830%
- Food & beverage$803%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | 4 | $2,354 |
| Celltrion, Inc. | 1 | $88 |
How this compares
$2,442 in reported general payments places this provider in the 85th percentile of 1,206 diagnostic radiology providers in Massachusetts.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other diagnostic radiology in Boston
- Gregg MillerBoston$1.8M
- Stephan AndersonBoston$1.6M
- Ashraf ThabetBoston$1.4M
- Mukesh HarisinghaniBoston$1.4M
- Andrew KompelBoston$1.3M
- Elaine IuanowBoston$590K
- Subba DigumarthyBoston$561K
- Michael SteignerBoston$504K
- Jennifer UyedaBoston$412K
- Victorine MuseBoston$364K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.